J. McIntyre Machinery v. Nicastro

Holding: A court may not exercise jurisdiction over a defendant that has not purposefully availed itself of doing business in the jurisdiction or placed goods in the stream of commerce in the expectation they would be purchased in the jurisdiction.

Judgment: Reversed, 6-3, in an opinion by Justice Anthony Kennedy on June 27, 2011. Justices Breyer filed an opinion concurring in the judgment, which was joined by Justice Alito. Justice Ginsburg filed a dissenting opinion, which was joined by Justices Sotomayor and Kagan.